Question

What is 1/3 plus 1/6?

Answer 1

The decimal is 0.0555555

Answer 2

We need to find the common denominator, since 3 goes into 6 2 times, we must multiply 1 x 2 and 3 x 2. 
The equation now is 2/6 + 1/6. 
Add those to get 3/6. That can be simplified to 1/2
Answer is 1/2.